noun
- A whistle on a boat that is sounded as a warning. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). boat whistle. Retrieved September 23, 2026, from http://smartdefine.org/boat_whistle/definitions/1201865 |
| Chicago | WordNet. 2010. "boat whistle" http://smartdefine.org/boat_whistle/definitions/1201865 (accessed September 23, 2026). |
| Harvard | WordNet 2010, boat whistle, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/boat_whistle/definitions/1201865>. |
| MLA | WordNet. "boat whistle" 23 October 2010. Web. 23 September 2026. <http://smartdefine.org/boat_whistle/definitions/1201865> |